Antiskid device



Jan. 25, 1949. y B. B. GEMENY 2,460,003

ANTISKID DEVICE Filed' April 8, 1946 Patented Jan. 25, 1949 OFFICE.'

ANTISKID DEVICE Blaine B. Gemeny, Chicago, Ill.

Application April 8, 194.6, Serial No. 660,435

The present invention relates to anti-skidding devices to be used in connection with tires, to prevent a dangerous amount of .skidding of automobiles, trucks, bicycles and the like, upon pave ments or streets which are slippery, or which are covered with ice, snow, water, oil or other matter, thereby preventing accidents which would otherwise result.

One object of the invention is to provide an improvedd'evice of this character which may be readily'appliedV to the tread` of a tire and is so designed and constructed thatwhen it is in positionthe tractive force will be transferred directly to the tire casing to the end that all leverage action between the fastening means and the tire will be avoided.

Another object of the invention is to provide an improveddevice of this character in which the tractive force will be transferred as compression to the fastening means, and which compression force will be spread over an enlarged area, so as to reduce the unit shear or tearing action on the tire casing.

A further object is to provide an improved device of this character which may be readily applied to a. tire, and which not only exerts a firm grip but also provides positive means for maintaining such firm grip.

A lvstill further object ofthe inventionv is to provide an improved device of this character which is both simple, durable and strong in construction, and effective and eiicient in operation.

To the attainment of these ends, and the accomplishment of other new and useful objects asr will appear, the invention'consists in the features of novelty in substantially the construction, combination and arrangement of the several parts, hereinafter more fully described and claimed, and shown in the accompanying drawing exemplifying this invention.

Fig.. 1 of the drawing is a top plan view of a portion of a tire, showing an: anti-skid device constructed in accordance with the principles Vof this invention, applied thereto.

Fig. 2 is a transverse section on line 2-2 of Fig. 1.

Fig. 3 is an device.

Fig. 4 is a bottom plan view of one of the clamp-r ing members.

Fig. 5 is a top plan view of the clamping member of Fig. 4.

The anti-skidding device constituting the present invention consists essentially of two co-operexpioded view of the anti-skid 6 Claims. (Cl. 152-210) ating clamping members Iil-I I, and these may be of any desired size and configuration lbut are preferably of disc-like formation. They are provided, respectively, with circumferential equi-n distantly spaced teeth I2I3. one member are directed towards the teeth on the other member so that they may be ernbedded in a portion-A of the tire B that is disposed between the clamping members.

The member I0 is located inwards of the member II and has an integral outwardly extending stem I4 which is preferably centrally disposed` and is of suitable length. The diameter of the stem is considerably less than the diameter of its clamping member I0. The stem embodies an external screw thread I5 and passes outwards through a hole in the tire B and an opening inl the central portion of the member i i. Such opening is of slightly greater diameter than the stem in order that the clamping member il is free to slide on the stem. As shown in Fig. 2, the member i I is recessed into the tread of the tire B, and a nut i5 is mounted on the outer end of the stem. The inner portion of the nut is also recessed into the tire tread so as to engage the member il to the end that tightening or inward adjustment of the nut I6 upon the stem will force the two members I0 and II towards each other into clamping relation with the portion of the tire that is therebetween. The clamping member i0 is in effect a head and the clamping member l i functions as a washer.

The nut I6 may be of any desired size, and is preferably provided wit'lh a centrally disposed recess il into which the outer extremityof the stem I4 projects. Such extremity of4 the stem is upset or beaded over, as at I8, in order to lock the nut I6 in place and also hold the members It and. II against separation. Being recessed into the member I6, the upset or beaded over portion I8 of the stem will be maintained out of contact with the road bed. The outer face of the nut or member. I6 is preferably shaped to form spaced apart, lug-type, road-engaging portions I9 which bite into the road bed for tracv These road-engaging portions may be'arranged in any desired or suittion promoting purposes.

able manner and are here shown as being substantially of the shape of the star. They project any desired or suitable distance beyond the tread of the tire in order that they grip the road bed when brought into contact therewith.

Any number of these devices may be employed and attached to the tire in any desired arrangement. For example, they may be arranged in a The teeth on single or double line or they may be staggered.

With this improved construction, it will be` 'l manifest that there is provided a simple and efficient anti-skid -device which may be readily applied and will be very effective. The device will not cut or damage the tire casing since the tractive force is exerted directly to the tire, and the objectionable leverage action heretofore present in devices of this character is eliminated. Furthermore, the casing fibers will be held in lm position within the outer circumference of the device and hence they cannot become deformed and cause a movement of the device within thev tire structure. i

The device is secured in position from the outside of the tire by tightening the nut I6 after first properly positioning the clamping members I and H. After tightening of the nut the outer end of the stem M is upset or beaded over.

If desired, and after the device has been applied tothe tire casing, the hole through which the stem i4 passes, as well as the surface ofthe tire surrounding the hole, may be provided with a coating of liquid gum, or other suitable subr stance, so that whenv the nut is tightenedthe assemblywill provide a positive water and oiltight construction.

In use, andY if desired, spare tires whichare equipped with the improved devices are mounted` onA wheels, and may be carried inV a car or vehicle, so that they may be readily interchanged for the usual tire equipped traction wheels.

While the preferred form of the inventionV has been herein shown and described, it is to` be une derstood that various changes may be made in the details of construction, inthe combination and arrangement of the several parts, and in the shapes and configuration thereof, within the scope of the claims, without departing from the spirit of this invention.

Whatis claimed as new is:

l.. An anti-skid device for tires, embodying two cci-operating embers for clam portion of atire therebetween, means for i ld ig said members in assembled relation and embodying a projection .on one member upon 'which the other member is adjustable, and aclamping member fro-operating with said projection and operating to force said members into ciali/ming relation, the end of said projection extending beyond said clamping member andbeing deformed. in order to secure the members against separation, the de formedend of the projection being recessed into the said clamping member. i

2. An anti-skid device designed for use with a tire and embodying a stern adapted to pass outwards through, the tire, a head on the inner end of the stem of a diameter substantially larger than the diameter of the stem and adapted to engage the inner face of the tire, a washer on the centralportion of the stem, said head and` washer co-operating to clamp the tire therebetween, .said washery ybeing recessed ,into the tire,v

and a nut threaded on the outer end of the stem for causing a clamping relation between said head and washer, the extreme outer end of said stem being upset against thernut, the outer portion of the nut having pavementeengaging projections, said head and said washer being provided with peripheral teeth, the teeth on each projecting towards the teeth on the other.

3. An anti-skid device designed for use with 4 a tire and embodying a stem adapted to pass outwards through the tire, a head on the inner end of the stem of a diameter substantially larger than the diameter of the stem andadapted to engage the inner face of the tire, a washer on the central portion of the stem, said head and washer co-operating to clamp the tire therebetween, said washer being recessed into the tire, and a nut threaded on the end of the stem for causing a clamping relation between said head and said washer, the extreme outer endA of said stem being upset against the nut, the outer face of said nut being shaped toprovide spaced, outwardlyextending, lug-type projections adapted to engage the pavement and cut thereinto.

4.An anti-skid device designed for use with a tire and embodying a stem adapted to pass outwards through the tire, a head on the inner endv of the stem of a diameter substantially larger than the diameter lof the stem and adapted to engage the inner faceof the tire, a washer. on the central portion vof the stem, said head and washer co-operating to clamp the tire therebetween, said washer being recessed into the tire,

and a `nut threadedcnthe outer end of the stem,A for causing. a clamping relation between. said head and said washer,.the eXtreme `outer end of said stem bein-g upset against thevnut, said nut having on its outer portion pavement-engaging projections disposed in a plane beyond the plane of the upset extreme outer end of said stem.

. 5. An anti-skid device for tires, said device ern-- for maintaining the said `members and the first said means in assembled relation, and pavementengaging projections on the first said means, said projections being disposed in a plane beyond-the second said means.

6. An anti-skid device fortires, said device embodying two co-operating members for clamping a portion of a tire therebetween, `one of said members engaging the inner face of the tire, and

the otherbeing recessed into thetread of f the4 tire from the periphery thereof, a stem on the innermost member extending through the other member, means engaging the stem for forcing the said members into clamping relation,l the end of said stem being upset to maintain the parts in assembled relation,- andV pavement-engaging projections onthe rst saidmeans, projecting beyond the said upset `end of said stem..

BLAINE B. Gianmaria@` REFERENCES CITED The following references are: of record in the die of this patenti* France .July 4, 1905 

